CN106128889A - A kind of two-part insulating ceramic injection fuse box of cartridge fuse peripheral hardware insulating barrier - Google Patents
A kind of two-part insulating ceramic injection fuse box of cartridge fuse peripheral hardware insulating barrier Download PDFInfo
- Publication number
- CN106128889A CN106128889A CN201610716161.XA CN201610716161A CN106128889A CN 106128889 A CN106128889 A CN 106128889A CN 201610716161 A CN201610716161 A CN 201610716161A CN 106128889 A CN106128889 A CN 106128889A
- Authority
- CN
- China
- Prior art keywords
- fuse
- cartridge fuse
- insulating ceramic
- cartridge
- insulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
- H01H85/08—Fusible members characterised by the shape or form of the fusible member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/165—Casings
Abstract
The present invention discloses the two-part insulating ceramic injection fuse box of a kind of cartridge fuse peripheral hardware insulating barrier, and the top of insulating ceramic is provided with locking device；The binding post of fuse and bottom cartridge fuse is fixed and is passed top cartridge fuse and is fixed on the upper end of insulating ceramic by described locking device；Described fuse has, in the part of middle part cartridge fuse, the fuse part that diameter is less, and the two ends of described fuse part are provided with the outside of the fuse between flash hider, described flash hider and top cartridge fuse and bottom cartridge fuse and are cased with pyrocondensation insulating barrier；In axial bore between described top cartridge fuse, bottom cartridge fuse, spring is set；The bottom of bottom cartridge fuse is fixed with impact head；The bottom of the axial bore of described insulating ceramic arranges closure.The invention can ensure that the fuse after fusing is state of insulation, it is to avoid the bad electric discharge phenomena caused in fusing position；Additionally, the present invention utilizes the direct compression spring of cartridge fuse, and the sealed bottom that have employed impact head destruction insulating ceramic blocks up, therefore, it is ensured that bottom cartridge fuse ejects reliable.
Description
Technical field
The present invention relates to electrical equipment technical field, a kind of fuse.
Background technology
Expulsion fuse is to be contained in the insulation tube being made up of solid gas generant material by melt.Solid gas generant material can be adopted
Cardboard or pmma material etc. is highlighted with electrician.When short circuit current is by melt, melt fuses generation electric arc immediately, high temperature
Electric arc makes solid gas generant material decompose rapidly a large amount of gases at high pressure of generation, thus is sprayed at pipe two ends by ionized gas band electric arc
Go out, send great acousto-optic, and extinguish electric arc when alternating current zero passage and breaking current.Chinese Patent Application No.
201310538197.X discloses a kind of fuse, and cartridge fuse is arranged at the inside of insulating ceramic, connection corresponding with cartridge fuse
Upper contact electrode and lower contact electrode are respectively arranged on top and the bottom of insulating ceramic, and the two is connected respectively inlet line and goes out
Mouthful line, inlet line and egress line draw the outside in insulating ceramic, the exit of the two be respectively provided with seal plug and under close
Block head, and upper seal plug and lower seal plug are respectively by inlet line and egress line insulation parcel, the circuit of outlet accesses
In circuit, cartridge fuse forms circuit after fusing in insulating ceramic and cut-offs, and excision faulty section circuit or faulty equipment arrange molten
The inlet line of disconnected device and the insulation package structure of outlet line end, by the Each part insulated enclosure of fuse in insulating ceramic
Inside, improves insulating protection performance.Cartridge fuse is divided into upper, middle and lower three part by this patent, after fuse failure, and melting of mid portion
Fiber tube ruptures, and bottom cartridge fuse is ejected in insulating ceramic by spring.Column defects in the presence of this patent: 1. cannot determine that fuse arrives
First the end somewhere fuses, if fusing occurs in bottom, then in the fuse of top residual and lower line outlet
Lead-out wire due to close together, be easily generated electric arc, cause line fault；2. the ejecting structure of this patent is unreasonable, once under
Portion's cartridge fuse ejects the most completely, then stay spring in insulating ceramic etc. as conductor, the phenomenon of thoroughly disjunction easily occurs,
Easily cause loss.
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide the fuse of a kind of reliable breaking, concrete technical side
Case is as follows:
The two-part insulating ceramic injection fuse box of a kind of cartridge fuse peripheral hardware insulating barrier, including insulating ceramic and be arranged at institute
State the cartridge fuse in the axial bore of insulating ceramic, it is characterised in that: the top of described insulating ceramic is provided with locking device；Institute
State cartridge fuse and include that the binding post of top cartridge fuse, middle part cartridge fuse and bottom cartridge fuse, fuse and bottom cartridge fuse is fixing also
It is fixed on the upper end of insulating ceramic by described locking device through top cartridge fuse；Described fuse has in the part of middle part cartridge fuse
Having the fuse part that diameter is less, the two ends of described fuse part to be provided with flash hider, described flash hider melts with top cartridge fuse and bottom
The outside of the fuse between fiber tube is cased with pyrocondensation insulating barrier；Arrange in axial bore between described top cartridge fuse, bottom cartridge fuse
Spring；Between the spacing preiection of described bottom cartridge fuse and insulating ceramic, conducting ring is set；Conducting ring is connected with lower lead-out wire；Bottom
The bottom of cartridge fuse is fixed with impact head；The bottom of the axial bore of described insulating ceramic arranges closure；
For easy construction, described insulating ceramic includes insulating ceramic and lower insulating ceramic two parts；Described upper insulation
Porcelain body and lower insulating ceramic are embedded structures, and the outside of seam crossing arranges mounting ring, and mounting ring arranges annular protrusion, described annular
In the protruding annular groove embedding upper insulating ceramic and lower insulating ceramic, at the fastening of described mounting ring, through hole is set, is used for setting
Put bolt and nut；Described top cartridge fuse, the outside of bottom cartridge fuse are also cased with pyrocondensation insulating barrier.
Due to the fact that and have employed pyrocondensation insulant, and preset fusing position, it is ensured that the fuse after fusing
In state of insulation, it is to avoid the bad electric discharge phenomena caused in fusing position；Additionally, the present invention utilizes cartridge fuse directly to compress bullet
Spring, and the sealed bottom that have employed impact head destruction insulating ceramic is stifled, therefore, it is ensured that and bottom cartridge fuse ejects reliable.
Accompanying drawing explanation
Fig. 1 is the population structure schematic diagram of the present invention；
Fig. 2 is the structural representation of cartridge fuse；
Fig. 3 is the schematic diagram of upper locking device.
Detailed description of the invention
Illustrating the present invention below in conjunction with the accompanying drawings, as shown in Figure 1 and Figure 2, the present invention includes insulating ceramic and is arranged at institute
Stating the cartridge fuse in the axial bore 100 of insulating ceramic, insulating ceramic includes insulating ceramic 14 and lower insulating ceramic 15 two
Point, the top of described insulating ceramic is provided with locking device 10；As it is shown on figure 3, described locking device 10 includes being fixed on absolutely
Chuck 106 in edge porcelain body top groove, is threaded outside described chuck 106, and centre arranges wedge shape through hole 105；Top is melted
The lead-out wire 1 of fiber tube 6 is through described wedge shape through hole 105；Binding nut 107, described binding nut are set outside described chuck 106
The internal diameter of 107 external diameter less than chuck 106 exterior bottom the external diameter more than chuck top are to ensure along with binding nut 107
Screwing, lead-out wire 1 is clamped and fixes by wedge shape through hole 105.
Described cartridge fuse includes top cartridge fuse 6, middle part cartridge fuse 7 and bottom cartridge fuse 8, fuse and bottom cartridge fuse 8
Binding post fix and pass top cartridge fuse and be fixed on the upper end of insulating ceramic 14 by described locking device 10；Described fuse exists
The part of middle part cartridge fuse has the less fuse part of diameter 3, and the two ends of described fuse part 3 are provided with flash hider 91, described fire prevention
The outside of the fuse 2 between cap 91 and top cartridge fuse 6 and the fuse 4 between flash hider 91 and bottom cartridge fuse is cased with pyrocondensation insulating barrier
9；In axial bore 100 between described top cartridge fuse 6, bottom cartridge fuse 8, spring 13 is set；Described top cartridge fuse 6, bottom
The outside of cartridge fuse 8 is also cased with pyrocondensation insulating barrier 9；Set between the spacing preiection 101 of described bottom cartridge fuse 8 and lower insulating ceramic 15
Put conducting ring 51；Conducting ring 51 is connected with lower lead-out wire 5；The bottom of bottom cartridge fuse 8 is fixed with impact head 11；Described insulation porcelain
The bottom of the axial bore 100 of body arranges closure 12.
Described upper insulating ceramic 14 and lower insulating ceramic 15 are embedded structures, and the outside of seam crossing arranges mounting ring 16, peace
Dress ring 16 arranges annular protrusion, and described annular protrusion embeds in the annular groove of upper insulating ceramic 14 and lower insulating ceramic 15, institute
State at the fastening of mounting ring 16 17 and through hole 18 is set, be used for arranging bolt and nut.
The material of described pyrocondensation insulating barrier can use 260 DEG C of Teflon PTFE heat of Shanghai Ou Xian industry development company limited
The draw, its performance indications such as following table:
| Project | Test method | Characteristic requirements |
| Proportion | ASTM D792 | 2.16g/cm3 |
| Tensile strength | ASTM D638 | 24.5MPa |
| Percentage elongation | ASTM D638 | 350% |
| Bending coefficient | ASTM D790 | 490MPa |
| Impact strength | ASTM D256 ,+23 DEG C of-54 DEG C of j/m | Flawless 107 |
| Hardness | ASTM D2240 | 55Shore D |
| Coefficient of friction | 0.1 | |
| Fusing point | 327℃ | |
| Use temperature | 260℃ | |
| Flammability | UL-224 | VW-1 |
| Dielectric constant 103-106Hz | ASTM D150 | 2.1 |
| Dissipation factor 106Hz | ASTM D150 | 0.0002 |
| Electric arc coefficient | ASTM D495 | 300S |
| Specific insulation | ASTM D257 | 1018 Ω .cm |
| Weatherability | “Weather-o-meter”(2000h) | Unchanged |
| Solvent resistant | ASTM D543 | Excellent |
| Chemically-resistant | ASTM D543 | Excellent |
During fuse failure, its temperature is higher, and the high temperature produced with electric arc, due to the fact that and is provided with flash hider,
High temperature at fusing can be intercepted, and the temperature of fuse itself raises and can not be melted completely by the material of pyrocondensation insulating barrier
Changing, be only will to carry out limited thawing with the part of fuse wire contacts, outside is due to the quick release of spring, broken in the middle part of cartridge fuse
Ejecting after splitting, heat-shift quick with air during ejecting, the condition just meeting pyrocondensation makes heat-shrink tube receive
Contracting.For adapting to different technology requirements, different types of fuse materials can be used, as used the metals such as copper, silver, lead to meet difference
Fusing requirement.
Will not hang on cartridge fuse when cartridge fuse ejects downwards for the conducting ring 51 described in ensureing, described conducting ring 51 is
" U " matrix shape, the size of opening part is more than the external diameter of cartridge fuse.
For ensureing that the diameter of the upper lead-out wire of described fuse is more than in the cartridge fuse of fuse top reliably by spring precommpression
Fuse diameter.
For ensureing reliable insulation, outside described lower lead-out wire 5, insulating barrier 19 is set.
Described flash hider 91, closure 12 and impact head 11 material can use ceramic material.
For ensureing described closure 12 energy rapid disruption when being impacted by impact head 11, described impact head 11 is triangle,
Its tip is down.Described closure 12 arranges recess with lower insulating ceramic 15 junction.
During for ensureing fusing, the quick of spring discharges, and described spacing preiection 101 embeds the groove inside lower insulating ceramic 15
In, and described spacing preiection material is low-melting alloy, the fusing point produced such as Dongguan Wo Chang metal decoration material factory is 70 DEG C
Alloy, interferes with this spacing preiection when to use the benefit one of this material be to prevent spring from discharging, and spring cannot discharge；Additionally
Even if benefit be to there occurs interference, electric arc can be produced owing to interfering, cause temperature to rise, and the rising of temperature necessarily carries
Carry out the thawing of this spacing preiection, and then ensure that the final release of spring.
When fuse is properly functioning, melt makes fuse be in closure state by the tensile force of pull spring.Work as system
When breaking down, fault current makes fuse fuse rapidly, and spring can drive cartridge fuse to move downward quickly, without barrier.Electric arc
Produced heat can make cartridge fuse produce a number of noble gas, the rapid movement of cartridge fuse Internal fuse and noble gas
Arc extinguishing effect, electric arc can be extinguished rapidly, cut off short circuit current, simultaneously, the material of pyrocondensation insulating barrier will be disconnected after being heated
Remain fuse and top cartridge fuse and bottom cartridge fuse parcel at Kou, form insulation protection, it is to avoid power-off is the most thorough.Bottom is melted
The striker that fiber tube is carried will puncture diaphragm seal, make the upper and lower locking device of the disposable fusion tube that fuse used thread off, fusion tube
It is ejected.
Claims (1)
1. a two-part insulating ceramic injection fuse box for cartridge fuse peripheral hardware insulating barrier, including insulating ceramic be arranged at described
Cartridge fuse in the axial bore of insulating ceramic, it is characterised in that: the top of described insulating ceramic is provided with locking device；Described
Cartridge fuse includes top cartridge fuse, middle part cartridge fuse and bottom cartridge fuse, and the binding post of fuse and bottom cartridge fuse is fixed and wears
Cross top cartridge fuse and be fixed on the upper end of insulating ceramic by described locking device；Described fuse has in the part of middle part cartridge fuse
The fuse part that diameter is less, the two ends of described fuse part are provided with flash hider, described flash hider and top cartridge fuse and bottom fuse
The outside of the fuse between pipe is cased with pyrocondensation insulating barrier；In axial bore between described top cartridge fuse, bottom cartridge fuse, bullet is set
Spring；Between the spacing preiection of described bottom cartridge fuse and insulating ceramic, conducting ring is set；Conducting ring is connected with lower lead-out wire；Bottom is melted
The bottom of fiber tube is fixed with impact head；The bottom of the axial bore of described insulating ceramic arranges closure；Insulating ceramic includes absolutely
Edge porcelain body and lower insulating ceramic two parts；Described upper insulating ceramic and lower insulating ceramic are embedded structures, and the outside of seam crossing sets
Putting mounting ring, mounting ring arranges annular protrusion, and described annular protrusion embeds upper insulating ceramic and the annular groove of lower insulating ceramic
In, at the fastening of described mounting ring, through hole is set, is used for arranging bolt and nut；Outside described top cartridge fuse, bottom cartridge fuse
Portion is also cased with pyrocondensation insulating barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610716161.XA CN106128889A (en) | 2016-08-24 | 2016-08-24 | A kind of two-part insulating ceramic injection fuse box of cartridge fuse peripheral hardware insulating barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610716161.XA CN106128889A (en) | 2016-08-24 | 2016-08-24 | A kind of two-part insulating ceramic injection fuse box of cartridge fuse peripheral hardware insulating barrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106128889A true CN106128889A (en) | 2016-11-16 |
Family
ID=57275518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610716161.XA Pending CN106128889A (en) | 2016-08-24 | 2016-08-24 | A kind of two-part insulating ceramic injection fuse box of cartridge fuse peripheral hardware insulating barrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106128889A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1936652A2 (en) * | 2006-12-20 | 2008-06-25 | Ferraz Shawmut | Protection fuse for electrical appliances |
| CN101685734A (en) * | 2008-09-26 | 2010-03-31 | 邱鸿智 | Explosion proof fuse with energy saving and environmental protection as well as manufacturing method thereof |
| CN102243958A (en) * | 2011-05-16 | 2011-11-16 | 曲秀均 | Fully-insulated drop-out type fuse having built-in fusion tube |
| CN103545154A (en) * | 2013-11-04 | 2014-01-29 | 国家电网公司 | Fuse protector |
| CN203659778U (en) * | 2013-12-10 | 2014-06-18 | 杭州国电电气设备有限公司 | Outdoor full insulation jet type fuse |
-
2016
- 2016-08-24 CN CN201610716161.XA patent/CN106128889A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1936652A2 (en) * | 2006-12-20 | 2008-06-25 | Ferraz Shawmut | Protection fuse for electrical appliances |
| CN101685734A (en) * | 2008-09-26 | 2010-03-31 | 邱鸿智 | Explosion proof fuse with energy saving and environmental protection as well as manufacturing method thereof |
| CN102243958A (en) * | 2011-05-16 | 2011-11-16 | 曲秀均 | Fully-insulated drop-out type fuse having built-in fusion tube |
| CN103545154A (en) * | 2013-11-04 | 2014-01-29 | 国家电网公司 | Fuse protector |
| CN203659778U (en) * | 2013-12-10 | 2014-06-18 | 杭州国电电气设备有限公司 | Outdoor full insulation jet type fuse |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161116 |
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| RJ01 | Rejection of invention patent application after publication |